Abstract :
R. J. C. Wood: The outstanding point which struck me in this paper was the very small number of kilowatt-hours that are stored in the kinetic energy of the moving fly-wheel. Here is a 27,000-kv-a. unit and the total stored energy from full speed down to nothing is only 16 kw-hr. That seems to be such a small amount that it would not enter materially into any disturbances of the system, particularly, as the whole of that 16 kw-hr. is not used since the speed will not drop from full speed to zero; the fluctuation will be very small and the amount of energy re eased will correspond to it.
